Off-season

What is Off-season?

The period of time between the Super Bowl and the beginning of
the next pre-season. The off-season is the time when teams deal
with re-signing players with expiring contracts, drafting eligible
college players, signing free agents, and running off-season
mini-camps. The off-season is a time for teams to rebuild their
rosters and attempt to improve themselves for the following
season.

Sporting Charts explains Off-season

The off-season features a great deal of player movement. Teams
will begin by trying to re-sign the players on their team who have
expiring contracts. Typically, a team will have to balance the
money being requested by a player with his value to the team. After
re-signing the players that they want to-or are able to-retain,
they will fill the remaining holes in their roster with other
teams' free agents and college players eligible for the NFL Draft.
The off-season is also a time when teams will adjust their coaching
staff, either firing ineffective coaches or replacing coaches who
have gone on to other jobs.